Speings



(No Model.) v M. H. COLLOM.

BED SPRING.

No.1374,658. Pategted Dec. 13, 1887.

Lung-Phan www. D. c.

UNITED STATES PATENT OFFICE.

MARTIN H. OOLLOM, OF IDAHO SPRINGS, COLORADO.

BED-SPRING.

v SPECIFICATION forming part of Letters Patent No.-374,658, dated December 13, 1887.

Application tiled September 6, 1887. Serial No. 248,945. (No model.)

To aZZ'whom it may concern.-

Be it known that I, MARTIN H. CoLLoM, a citizen of the United States, residing at Idaho Springs, in the county of Clear Creek and State ofl Colorado, have invented certain new and useful lmprovementsin Bed-Springs; and I do declare the followingto be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to an improved spring and bed-bottom of springs.

Heretofore it has been customary to make coil-springs out ofa single wire formed into a single coil, or to have the wire bent near its middle and each half made into a spring the convolutes of which are concentric and parallel or oppositely disposed relative to each other, thus making what is called a double spring. Such springs, when arranged in series to form a bed-bottom, have the crosswires which connect the springs and form the supporting-surface for the bed-clothing attached directly to vthe springs by being twisted about the same, or connected therewith by links, loops, or equivalent devices.

rlhis invent-ion aims to obviate the above objections and produce a spring which will do away with all sharp points and dispense with all ties or bands for connecting the springs to each other and to the cross-wires.

The improvement consists in a spring made of a single wireidoubled on itself and. having its limbs twisted together. The wire thus twisted is formed into a eoilspring. Aseries of such springs arranged to form a bed or other bottom are connected together by crosswires passed between the strands of the convolutes of the springs.

The improvement further consists in the novel features more fully hereinafter set forth,

claimed, and shown in the annexed drawings, in which- Figure l is a perspective View of a spring embodying my invention, and Fig. 2 a plan view of a spring bed-bottom of m'y invention.

The spring A is made of a single wire bent at its middle to form twov limbs or strands, which are twisted together and formed into desired shape. It is preferredv to have the spring made of a single wire bent at its middle, as thereby no ends are formed to catch into and tear the bed-clothing; but the spring may be formed of two wires or strands twisted together, as shown by the dotted lines in Fig. l.u A number of springs constructed as above described and arranged in a series to form a bed-bottom, as shown by Fig. 2, are connected ,together by the crosswires B, which pass diagonally across the springs and between the strands of their twists and through the eyes formed at the ends of the springs by thebend in the wires composing them. wires lintersect with the springs at four points The crossand hold their upper convolutes in the same plane, thus rendering it impossible for the springs to tip. By this construction a network is formed across the spaces between the springs and a larger number of the springs are brought into action at one time.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s-

l. A coil'spring composed of two strands twisted together, substantially as and for the purpose described.

2. A coil-springformed of a single wire doubled or bent at its middle to form two limbs,whieh are twisted together,substantially as specified. Y

' 3. A bottom composed of a series ofsprings formed of twistedstrands and the cross-wires passed between the strands of a twist for connecting the springs together'.

4. A spring-bottom composed of a series of springs made of wires, bent at their middle to form an eye, and two strands, which strands are twisted together, and the cross-wires passed through said eyes and between the strands of a twist of the springs for connecting them together, substantially as and forthe purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

MARTIN H. COLLOM. Witnessesz' ORLANDO KLING, JOHN CAMPBELL. 

